6533b826fe1ef96bd128527c
RESEARCH PRODUCT
Essential Measurements for Finite Element Simulations of Magnetostrictive Materials
Tuomas KovanenLauri KettunenArto Poutalasubject
MagnetismConstitutive equation02 engineering and technologyfinite element analysismagnetostriction01 natural sciencesCondensed Matter::Materials Sciencestressstrain0103 physical sciencesTensorElectrical and Electronic Engineering010302 applied physicsPhysicsrasitusta213magnetomechanical couplingta111MagnetostrictionMechanics021001 nanoscience & nanotechnologyMagnetic hysteresisFinite element methodElectronic Optical and Magnetic MaterialsMagnetic fieldHysteresistensile strengthvetolujuus0210 nano-technologydescription
We discuss which magnetoelastic material properties are essential to measure in order to model magnetostrictive materials in finite element simulations. We show knowing the magnetic constitutive relation is sufficient, if the elastic behavior without magnetic field is known a priori. We neglect hysteresis, and our starting point is to express the effect of mechanical deformation on the magnetic constitutive relation with a small strain tensor and magnetic flux density. It follows that the (energetic) state of a magnetostrictive material is independent of its history. Then, a certain choice of history allows us to keep magnetism and elasticity distinct. We demonstrate with open source software Elmer, how one can set up such magnetoelastic simulations. These simulations rely on data obtained from magnetostrictive measurements. Finally, it is discussed how a measurement setup and the finite element model should be combined in order to verify the approach with experiments. peerReviewed
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-01-01 |